Introduction:
They are suitable for alcohol checker, Breathalyser.
Structure and configuration of MQ-3 gas sensor is composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components.
Features:
High sensitivity to alcohol and small sensitivity to Benzene.
Fast response and High sensitivity
Stable and long life
Simple drive circuit.
Item included:
1. One piece MQ 3 sensor board
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